Abstract
Aim
To describe the long-term survival of out-of-hospital cardiac arrest (OHCA) patients
and to determine whether survival is improving in comparison to the general age- and
sex-matched population.
Methods
We utilised the St John Western Australia (WA) OHCA database to retrospectively identify
patients aged ≥16 years who experienced an OHCA within the Perth metropolitan area
between 1998 and 2017 and survived for at least 30-days post arrest. Patients were
excluded if their primary residence was not WA, they did not have an emergency medical
services attempted resuscitation (or bystander defibrillation) or did not have an
arrest of medical aetiology. Relative survival ratios stratified by decade of arrest
were calculated by dividing observed survival of the study cohort by the expected
survival of an age- and sex-matched cohort estimated from the Australian Bureau of
Statistics life tables for WA.
Results
The OHCA patients who initially survived to 30-days experienced a modest reduction
in long-term survival, with 84% (95% CI, 78–90) of patients surviving to 10-years
relative to the age- and sex-matched general population. The 10-year relative survival
increased from 76% (95% CI, 67–85) to 92% (95% CI, 84–100) between the first (1998−2007)
and second (2008−2017) decade of our study.
Conclusion
Relative long-term survival prospects for initial OHCA survivors are moderately lower
than that of the general population, however these differences have reduced over time
and may be approaching those of the general population.
Keywords
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Article info
Publication history
Published online: October 22, 2020
Accepted:
October 9,
2020
Received in revised form:
September 28,
2020
Received:
August 9,
2020
Identification
Copyright
© 2020 Elsevier B.V. All rights reserved.
